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I'm the Rose part of:

Rose, C. and Smith, M.D. (2002-2013)
Mathematical Statistics with Mathematica
Springer-Verlag / mathStatica

and one of the original developers of the mathStatica software add-on for Mathematica. I'm a long-time Mma fan since v2, ... a past Visiting Scholar at Wolfram Research, ... a recent guest editor of The Mathematica Journal, ... and a current editor of the Journal of Statistical Software.


Nov
14
comment Is Mathematica 10 compatible with Mac OS X 10.10 Yosemite
I tried Yosemite. The problem for me had nothing to do with Mma ... The problem is the UI of Yosemite itself which I think is ugly and bland and corporate and devoid of both taste and clean functional design. It is the least Mac-feeling OS that Apple has ever released. It reminds me of Windows XP. Anyway - if it is not obvious, I find it horrible, and I removed it from my Mac and installed Mavericks. All is good again.
Nov
13
comment How to do algebra on summations of variable expressions?
@JerryGuern Well, if you are going to include the $\frac{1}{n}$ (which is not in your question), then you are just working with a Normal $n$-component-mix (with equal weights). And since this is just a pdf, integrating over the domain of support is plainly 1. So, so far, I am not sure what using MMa adds to the 'plot'.
Nov
12
reviewed Approve suggested edit on How to import files with headers?
Nov
12
comment How to do algebra on summations of variable expressions?
I am curious: if random variable $X_i$ has pdf $f_i(x)$, what is the statistical meaning of $\sum_{i=1}^n f_i(x)$? What does it represent?
Nov
10
revised Is random number generation based on Farlie-Gumbel-Morgenstern copula wrong?
deleted 45 characters in body
Nov
10
answered Is random number generation based on Farlie-Gumbel-Morgenstern copula wrong?
Nov
8
comment ParallelTable kernels die - maybe Matlink timeout?
I have also had this problem. And frequently - generally with Integrate problems, where Integrate is sent off to various kernels to chug away at different components of a multi-part problem. I have 32G RAM and usually run 6 or 12 kernels. I don't think it is a memory problem, unless perhaps there is a memory leak, but even then I think this is most unlikely given the nature of the problems I have encountered this with.
Oct
17
comment Getting the Cumulative Distribution Function of f(x) from a dataset of x
Using a Normal distribution (which generates negative values) to illustrate does not seem ideal if the intention is to take square roots of the data.
Oct
8
reviewed Approve suggested edit on Trying to graph trajectory function in Mathematica? Won't Graph?
Oct
8
reviewed Approve suggested edit on Kramers-Kronig Mathematica code
Sep
30
awarded  Explainer
Sep
26
reviewed Approve suggested edit on Mathematica integration failure - new or old?
Sep
24
awarded  Autobiographer
Sep
23
reviewed Approve suggested edit on Export dataset to JSON
Sep
11
reviewed Approve suggested edit on Improving convergence in a numerical integration (Version 5.2)
Aug
27
awarded  Enlightened
Aug
27
awarded  Nice Answer
Aug
10
comment Expected sum of largest 3
Umm -- the solution given here using OrderDistribution is correct by chance, but the approach is not actually valid. In particular, it defines a as the distribution of the largest order statistic, b as the second largest ... etc ... each univariate ... BUT what is actually needed is the joint pdf of $(a,b,c)$ ... not the marginal pdfs of a, b and c. The solution happens to work in this particular instance, not because the method is correct, but because $E[a + b + c] = E[a] + E[b] + E[c]$. By contrast, the proposed method would give the wrong answer for: Expectation[a b c, etc]
Aug
7
comment Simulation Beta Distribution
OP notes that $X\sim Beta$ ... which is a continuous random variable. It is not stated what $y$ is, but if $y$ is a constant, or $y$ is an independent random variable, then $P(X=y) = 0$. If so, you can ignore the case $X = y$, because it happens with zero probability.
Aug
6
comment Mma 10: Half the parallel power (Macs)?
It's an observation, a workaround, and an empirical check. I would hope it is helpful to others. I would prefer to keep the question as is. But please do not let that discourage you from modifying your answer, because I am sure many would be interested in alternative parallel kernel speed comparisons.